# note: Code-length stream using code 18 with its maximum run of 138 zeros.
# expect: ok
# exercises: Longest repeat the format allows (11 + 127). Green alphabet is
#   280 symbols so two of them fit.
lossless
code green lengths 0:1 277:1
code green codelen 1 18x138 18x138 1 0 0
pixels 0